Rotary expansible chamber devices – With mechanical sealing
Patent
1997-01-07
1998-07-28
Vrablik, John J.
Rotary expansible chamber devices
With mechanical sealing
418152, 418169, 418170, 418179, F04C 210
Patent
active
057855102
ABSTRACT:
An improved gear pump having members with different hardnesses includes a housing defining an internal bore with inlet and outlet passageways. A head member includes a wall between the inlet and outlet passageways and extends toward a toothed rotor. A toothed idler gear meshes with the rotor. The head member and idler gear are made of materials having a hardness greater than that of the rotor material. In one embodiment the idler gear is made of ceramic material whereas the head member and rotor are made of cast iron, with the head member treated to have a hardness greater than that of the rotor.
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"Miller3 s Accutinters.TM. are upgraded with automatic calibration feature," Product Brochure #RA88169, one page, Miller Paint Equipment, Ltd..TM., Addison IL (undated, but believed to be prior art with respect to the subject invention).
Miller "Accutinter.TM. 3000 Colorant Dispenser," 2-page brochure, RA9019/ACC3000 Printed in U.S.A., Miller Manufacturing.RTM., A Division of Fluid Management Limited Partnership, Addison, IL (undated, but believed to be prior art with respect to the subject invention).
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Altieri, Jr. Anthony
Bothmann Richard David
DiGangi Philip
Fortin John Lewis
Heyde Dietrich M. E.
Fluid Management Limited Partnership
Vrablik John J.
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